[G2 Q&A, Help & Troubleshooting] billykxda:
After a spell of not seeing the erratic touchscreen issue on my G2, it occurred again today, and this time I hung in there with it to do a little investigation. With previous occurrences, I was always quick to fix the issue by turning the display off/on - which is predictably a temporary "fix" for this issue.

Previous activities:

Not sure that it's 100% certain that this issue is caused by "getting busy" with the G2, but more often than not, this is the case for me. This time, I picked up my G2 to look up a preview on football game - so I searched around, scrolled around a sports site, and then played a video that lasted about 1-2 minutes.

Observations:

After watching the video, I tried to make some on-page selections within the Chrome browser, and the G2 made some totally unpredictable selections - I had no idea where I had been taken. So, knowing that the "issue" was here in my hot little hands, I went back to the homepage. As with previous observations, I noticed that if I move my homescreen to the side so that it shares the screen 50/50 with a neighboring screen, and then hold it there - it'll start spazzing big time - shaking and vibrating horizontally even though I am holding it dead still mid-transition. No need to go draw any lines in QuickMemo - this is the easiest way to confirm that the errant behavior is present.

So while in this state of total spazz, I checked available RAM and it was about 750mb - plenty of RAM. I then cleared recent apps and closed all running apps in Task Manager. This freed-up more RAM - it was over 900mb RAM. Totally enough RAM to operate smoothly. But the issue was still there when I held my homepage half-way through the transition to the next page.

Then, I just put my finger down in the middle of my homepage, which normally would start-up the Wallpaper/Widget/Apps function - but it didn't. It just started vibrating the homepage to either side of my finger, then it selected an icon more than an inch below and moved it to the top of the homepage - all without moving my finger. I checked the notification shade (which hasn't worked in past observations) and sure enough, it wouldn't pull down. Straight lines drawn in QuickMemo produced EKG-spiked lines. I didn't try the keyboard b/c I was sure it would just output gibberish as I've seen many times before.

Having enough of this, I toggled the screen off/on and predictably, all was "well" again.

Conclusions?

- The issue is very consistent in its behavior as documented in the OP of this thread.

- The issue persists if you let it - I played with it for about 5 minutes or so.

- Available RAM had absolutely nothing to do with the issue - zip.

- Simply holding your homepage mid-transition with a neighboring page is a super-easy way to tell if your G2 is spazzing - no need to go to QuickMemo.

- Screen off/on totally "fixes" the issue temporarily - no ifs/ands/buts - it works.

As I was playing with this issue, it occurred to me again that it's possible that a broad portion (if not all) of the G2 community may have this issue, and when it occurs the owners may just simply think it's something they are doing wrong. Since turning the screen off is something we do constantly - and that "fixes" the problem - it won't be there when you come back (at least not initially), so at that point it's out-of-sight, out-of-mind for the user.